The Bolsover Colliery Company was a major mining concern established to extract coal from land owned by the Duke of Portland.

The company was founded in 1889 by Emerson Muschamp Bainbridge, a Northumberland born mine owner, who secured a lease from the Duke of Portland for land at Bolsover in Derbyshire and started shaft sinking to reach the coal in 1891.

[2] In 1899 Bainbridge secured a further lease from the Duke of Portland for land at Crown Farm near Mansfield in Nottinghamshire: coal was reached in 1905.

[1] Subsequent leases were secured from Earl Manvers and Lord Savile allowing collieries to be established at Rufford, Clipstone and Thoresby in Nottinghamshire where coal was reached 1913, 1922 and 1928 respectively.

[1] In 1933 the company's Bolsover, Clipstone, Creswell, Mansfield, Rufford and Thorsby Collieries employed 9,369 men extracting 4.5 million tons of coal from the Top Hard, Waterloo and High Hazel seams.